RAID

RAID, or Redundant Array of Independent Disks, is a technology of keeping data on a number hard disk drives which operate together as one logical unit. The drives could be physical or logical i.e. in the second case one drive is split into separate ones through virtualization software. In either case, exactly the same data is saved on all drives and the key advantage of employing this kind of a setup is that in the event that a drive breaks down, the data will remain available on the remaining ones. Having a RAID also boosts the overall performance since the input and output operations will be spread among a couple of drives. There are several types of RAID dependant upon how many hard disks are used, whether writing is performed on all of the drives in real time or just on one, and how the data is synchronized between the hard drives - whether it is written in blocks on one drive after another or it is mirrored from one on the others. All of these factors indicate that the error tolerance and the performance between the various RAID types can vary.

All of the content which you upload to your new hosting account will be placed on quick SSD drives that function in RAID-Z. This setup is built to employ the ZFS file system which runs on our cloud web hosting platform and it adds an additional level of security for your website content on top of the real-time checksum authentication that ZFS uses to guarantee the integrity of the data. With RAID-Z, the info is saved on several disks and at least one is a parity disk - whenever info is written on it, an additional bit is added, so if any drive fails for whatever reason, the integrity of the info can be verified by recalculating its bits based on what is kept on the production hard disks and on the parity one. With RAID-Z, the operation of our system won't be interrupted and it'll continue functioning effectively until the faulty drive is changed and the data is synced on it.